Enumerate Bodies Example (C++ COM)

This example shows how to use IEnumBodies to traverse the list of body objects. The IBody objects returned in IEnumBodies are the bodies associated with reference surfaces. This list does not include the part body itself. IEnumBodies::Next allows your application to get each individual body and then call appropriate methods for that body.

SOLIDWORKS represents each reference surface with two IBody objects, one for the front face and one for the back face. The faces for each body pair should have Normal vectors that are opposite.

 

// Precompiled header

#include "stdafx.h"

 

#include <../appcomm/amapp.h>

#include "userapp.h"

 

void WalkGTBody()

{

 LPMODELDOC m_ModelDoc = NULL;

 HRESULT hres = NOERROR;

 

 hres = UserApp->getSWApp()->get_IActiveDoc( &m_ModelDoc );  // Retrieve IModelDoc pointer

 if( m_ModelDoc == NULL )

  return; 

 

 LPPARTDOC m_PartDoc = NULL;

 hres = m_ModelDoc->QueryInterface( IID_IPartDoc, (LPVOID *)&m_PartDoc);

 

 walkBody(m_PartDoc);

 

 m_ModelDoc ->Release();

 m_PartDoc->Release();

}

 

void walkBody(LPPARTDOC pPartDoc)

{

 LPENUMBODIES pBodyEnum = NULL;

 HRESULT resultVal = pPartDoc->EnumRelatedBodies(&pBodyEnum);

 LPBODY pOldBody;

 resultVal = pBodyEnum->Next(1, &pOldBody, NULL); // Two bodies for each RefSurface

 while (S_OK == resultVal)

 {

  LPENUMFACES pFaceEnum = NULL;

  resultVal = pOldBody->EnumFaces(&pFaceEnum);

  int faceNum = 0;

  LPFACE pFace;

  resultVal = pFaceEnum->Next(1, &pFace, NULL);

  while (S_OK == resultVal)

  {

   VARIANT normal;

   faceNum++;

 

   LPBODY pCheckBody;

   resultVal = pFace->IGetBody(&pCheckBody);

   if (pCheckBody != NULL) pCheckBody->Release();

 

   pFace->Release();

   pFace = NULL;

   resultVal = pFaceEnum->Next(1, &pFace, NULL);

  }

 

  if (pFaceEnum != NULL) pFaceEnum->Release();

 

  pOldBody ->Release();

  pOldBody = NULL;

  resultVal = pBodyEnum->Next(1, &pOldBody, NULL);

 }

 

 if (pBodyEnum != NULL) pBodyEnum->Release();

}